If you can tell, the shadows swatched over the UDPP were slightly more vibrant than those swatched over the ELF primer. I also noticed that the color applied more evenly over the UDPP as opposed to the ELF primer which was more vibrant on some areas and a little lighter in others. I also noticed that pigments/loose shadows worked a little better over the UDPP.

Overall, I felt that for $1, the ELF primer held up pretty well throughout the day without